Table 2.

Description of Data Used in the Study: Breakdown of Nodule Characteristics (Shape, Density, Size) and Slice Thickness

			Slice Thickness (mm)
QIBA Type*	Lesion Type		0.8 mm QIBA Type = Yes	5.0 mm QIBA Type = No
No	Spherical	5 mm, −10 HU	6	6
		5 mm, 100 HU	2	2
		8 mm, −10 HU	6	6
		8 mm, 100 HU	2	2
		20 mm, −630 HU	6	6
	Elliptical	5 mm, −10 HU	6	6
		8 mm, −10 HU	6	6
		10 mm, −630 HU	6	6
		20 mm, −630 HU	6	6
	Lobulated	5 mm, −10 HU	6	6
		8 mm, −10 HU	6	6
		10 mm, −630 HU	6	6
		20 mm, −630 HU	6	6
	Spiculated	5 mm, −10 HU	6	6
		8 mm, −10 HU	6	6
		10 mm, −630 HU	6	6
		20 mm, −630 HU	6	6
	Irregular	8 mm, −300 HU	2	2
Yes	Spherical	10 mm, −10 HU	6	6
		10 mm, 100 HU	2	2
		20 mm, −10 HU	6	6
		20 mm, 100 HU	6	6
		40 mm, −10 HU	6	6
		40 mm, 100 HU	6	6
	Elliptical	10 mm, −10 HU	6	6
		10 mm, 100 HU	6	6
		20 mm, −10HU	6	6
		20 mm, 100 HU	6	6
	Lobulated	10 mm, −10 HU	6	6
		10 mm, 100 HU	6	6
		20 mm, −10 HU	6	6
		20 mm, 100 HU	6	6
	Spiculated	10 mm, −10 HU	6	6
		10 mm, 100 HU	6	6
		20 mm, −10 HU	6	6
		20 mm, 100 HU	6	6
	Irregular	10 mm, 100 HU	2	2
		12 mm, 20 HU	2	2
Total			204	204

QIBA, Quantitative Imaging Biomarker Alliance.

Notes: 8 mm of irregular lesion with −300 HU has only four scans of lesions, and 12 mm of irregular lesion with 20 HU has only four scans of lesions.

^*QIBA type include lesions that are equal or greater than 10 mm with non-ground glass nodules (here we set as nodules >−630 HU). Out of 408 scanned lesions, 300 lesions (74%) do not meet the QIBA Profile and 108 lesions (26%) meet the QIBA Profile.